1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
|
error: any use of this value will cause an error
--> $SRC_DIR/core/src/ptr/const_ptr.rs:LL:COL
|
LL | unsafe { intrinsics::ptr_offset_from(self, origin) }
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
| |
| ptr_offset_from cannot compute offset of pointers into different allocations.
| inside `ptr::const_ptr::<impl *const Struct>::offset_from` at $SRC_DIR/core/src/ptr/const_ptr.rs:LL:COL
| inside `DIFFERENT_ALLOC` at $DIR/offset_from_ub.rs:16:27
|
::: $DIR/offset_from_ub.rs:10:1
|
LL | / pub const DIFFERENT_ALLOC: usize = {
LL | |
LL | | let uninit = std::mem::MaybeUninit::<Struct>::uninit();
LL | | let base_ptr: *const Struct = &uninit as *const _ as *const Struct;
... |
LL | | offset as usize
LL | | };
| |__-
|
= note: `#[deny(const_err)]` on by default
= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
= note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
error: any use of this value will cause an error
--> $SRC_DIR/core/src/ptr/const_ptr.rs:LL:COL
|
LL | unsafe { intrinsics::ptr_offset_from(self, origin) }
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
| |
| unable to turn bytes into a pointer
| inside `ptr::const_ptr::<impl *const u8>::offset_from` at $SRC_DIR/core/src/ptr/const_ptr.rs:LL:COL
| inside `NOT_PTR` at $DIR/offset_from_ub.rs:22:14
|
::: $DIR/offset_from_ub.rs:20:1
|
LL | / pub const NOT_PTR: usize = {
LL | |
LL | | unsafe { (42 as *const u8).offset_from(&5u8) as usize }
LL | | };
| |__-
|
= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
= note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
error: any use of this value will cause an error
--> $SRC_DIR/core/src/ptr/const_ptr.rs:LL:COL
|
LL | unsafe { intrinsics::ptr_offset_from(self, origin) }
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
| |
| exact_div: 1_isize cannot be divided by 2_isize without remainder
| inside `ptr::const_ptr::<impl *const u16>::offset_from` at $SRC_DIR/core/src/ptr/const_ptr.rs:LL:COL
| inside `NOT_MULTIPLE_OF_SIZE` at $DIR/offset_from_ub.rs:30:14
|
::: $DIR/offset_from_ub.rs:25:1
|
LL | / pub const NOT_MULTIPLE_OF_SIZE: isize = {
LL | |
LL | | let data = [5u8, 6, 7];
LL | | let base_ptr = data.as_ptr();
LL | | let field_ptr = &data[1] as *const u8 as *const u16;
LL | | unsafe { field_ptr.offset_from(base_ptr as *const u16) }
LL | | };
| |__-
|
= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
= note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
error: any use of this value will cause an error
--> $SRC_DIR/core/src/ptr/const_ptr.rs:LL:COL
|
LL | unsafe { intrinsics::ptr_offset_from(self, origin) }
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
| |
| inbounds test failed: 0x0 is not a valid pointer
| inside `ptr::const_ptr::<impl *const u8>::offset_from` at $SRC_DIR/core/src/ptr/const_ptr.rs:LL:COL
| inside `OFFSET_FROM_NULL` at $DIR/offset_from_ub.rs:36:14
|
::: $DIR/offset_from_ub.rs:33:1
|
LL | / pub const OFFSET_FROM_NULL: isize = {
LL | |
LL | | let ptr = 0 as *const u8;
LL | | unsafe { ptr.offset_from(ptr) }
LL | | };
| |__-
|
= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
= note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
error: any use of this value will cause an error
--> $SRC_DIR/core/src/ptr/const_ptr.rs:LL:COL
|
LL | unsafe { intrinsics::ptr_offset_from(self, origin) }
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
| |
| unable to turn bytes into a pointer
| inside `ptr::const_ptr::<impl *const u8>::offset_from` at $SRC_DIR/core/src/ptr/const_ptr.rs:LL:COL
| inside `DIFFERENT_INT` at $DIR/offset_from_ub.rs:43:14
|
::: $DIR/offset_from_ub.rs:39:1
|
LL | / pub const DIFFERENT_INT: isize = { // offset_from with two different integers: like DIFFERENT_ALLOC
LL | |
LL | | let ptr1 = 8 as *const u8;
LL | | let ptr2 = 16 as *const u8;
LL | | unsafe { ptr2.offset_from(ptr1) }
LL | | };
| |__-
|
= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
= note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
error: aborting due to 5 previous errors
|
